package com.atguigu.gulimall.product.service.impl;

import com.atguigu.gulimall.product.service.CategoryBrandRelationService;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.Map;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;

import com.atguigu.gulimall.product.dao.BrandDao;
import com.atguigu.gulimall.product.entity.BrandEntity;
import com.atguigu.gulimall.product.service.BrandService;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.StringUtils;


@Service("brandService")
public class BrandServiceImpl extends ServiceImpl<BrandDao, BrandEntity> implements BrandService {

    @Autowired
    private CategoryBrandRelationService categoryBrandRelationService;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        //1 获取key
        String key = (String) params.get("key");
        LambdaQueryWrapper<BrandEntity> lambdaQueryWrapper = new LambdaQueryWrapper<>();
        if (!StringUtils.isEmpty(key)){
            lambdaQueryWrapper
                    .eq(BrandEntity::getBrandId, key).or().like(BrandEntity::getName,key);
        }

        IPage<BrandEntity> page = this.page(
                new Query<BrandEntity>().getPage(params),
                lambdaQueryWrapper
        );

        return new PageUtils(page);
    }

    @Transactional
    public void updateDetail(BrandEntity brand) {
        //1 先更新自己的表中数据
        this.updateById(brand);

        if (!StringUtils.isEmpty(brand.getName())){
            //2 同步更新其他表关联的冗余字段
            categoryBrandRelationService.updateBrand(brand.getBrandId(),brand.getName());

            //TODO 更新其他关联

        }
    }

}